National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Snow Squalls May Impact New Year's Eve Travel from the Great Lakes to the Mid-Atlantic; Heavy Rain & Isolated Severe Thunderstorms in Southern California

Snow squalls are likely to cross the Lower Great Lakes this evening and the Ohio Valley through the interior Northeast/northern Mid-Atlantic overnight, before potentially reaching the I-95 corridor from D.C. to New York City early New Year’s Day morning. Heavy rain and isolated severe thunderstorms will impact coastal southern California including Los Angeles tonight into early on New Year's Day. Read More >

Current conditions at

LOS ALTOS (LOAC1)

Lat: 37.35472°NLon: 122.14167°WElev: 539.0ft.

NA

49°F

9°C

Humidity 100%
Wind Speed WNW 0 MPH
Barometer NA
Dewpoint 49°F (9°C)
Visibility NA
Last update 31 Dec 08:10 PM PST
Extended Forecast for

2 Miles SSW Cupertino CA

  • Tonight

    Tonight: Rain. Low around 50. Southeast wind 6 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 50 °F

    Rain

  • New Year's Day

    New Year's Day: Rain before 1pm, then showers likely and possibly a thunderstorm between 1pm and 4pm, then rain likely and possibly a thunderstorm after 4pm. High near 59. South wind 8 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 59 °F

    Showers

  • Thursday Night

    Thursday Night: Rain likely, mainly before 8pm. Mostly cloudy, with a low around 48. South southeast wind 6 to 8 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 48 °F

    Rain Likely
    then Chance
    Rain

  • Friday

    Friday: Rain likely, mainly after 4pm. Mostly cloudy, with a high near 59. South southeast wind 8 to 13 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 59 °F

    Rain Likely

  • Friday Night

    Friday Night: Rain. Low around 52. South wind 15 to 20 mph, with gusts as high as 37 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 52 °F

    Rain

  • Saturday

    Saturday: Rain before 10am, then showers and possibly a thunderstorm between 10am and 1pm, then rain after 1pm. High near 59. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 59 °F

    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm. Low around 50. Chance of precipitation is 90%.

    Low: 50 °F

    Showers

  • Sunday

    Sunday: Rain. Cloudy, with a high near 57.

    High: 57 °F

    Rain

  • Sunday Night

    Sunday Night: Rain. Mostly cloudy, with a low around 48.

    Low: 48 °F

    Rain

Detailed Forecast

Tonight
Rain. Low around 50. Southeast wind 6 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
New Year's Day
Rain before 1pm, then showers likely and possibly a thunderstorm between 1pm and 4pm, then rain likely and possibly a thunderstorm after 4pm. High near 59. South wind 8 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
Rain likely, mainly before 8pm. Mostly cloudy, with a low around 48. South southeast wind 6 to 8 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Rain likely, mainly after 4pm. Mostly cloudy, with a high near 59. South southeast wind 8 to 13 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Rain. Low around 52. South wind 15 to 20 mph, with gusts as high as 37 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Saturday
Rain before 10am, then showers and possibly a thunderstorm between 10am and 1pm, then rain after 1pm. High near 59. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
Showers and possibly a thunderstorm. Low around 50. Chance of precipitation is 90%.
Sunday
Rain. Cloudy, with a high near 57.
Sunday Night
Rain. Mostly cloudy, with a low around 48.
Monday
Rain likely. Mostly cloudy, with a high near 56.
Monday Night
Rain likely. Mostly cloudy, with a low around 45.
Tuesday
A chance of rain. Partly sunny, with a high near 56.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 43.
Wednesday
A chance of rain. Partly sunny, with a high near 56.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSW Cupertino CA
 37.28°N 122.06°W (Elev. 666 ft)
Last Update:
2:14 pm PST Dec 31, 2025
Forecast Valid:
8pm PST Dec 31, 2025-6pm PST Jan 7, 2026
 
Forecast Discussion
 
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Additional Resources

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